package com.day16.java2;

public class StudentTest {
    public static void main(String[] args) {
        try {
            Student s = new Student();
            s.regist(-1001);
            System.out.println(s);
        }catch (Exception e){
//            e.printStackTrace();
            System.out.println(e.getMessage());
        }
    }
}

class Student{
    private int id;
    public void regist(int id) throws Exception{
        if(id > 0){
            this.id = id;
        }else{
//            System.out.println("您输入的数据非法！");
            //手动抛出异常对象
//            throw new RuntimeException("您输入的数据非法！");
//            throw new Exception("您输入的数据非法！");
            throw new MyException("不能输入负数");
        }
    }
    public String toString(){
        return "Student[id=" + id + "]";
    }
}